Oak Harbor, WA, USA
ODW
Oakland, CA, USA Metropolitan Oakland Intl Apt
OAK
Oakville, Ontario, Canada Oakville / Via Rail Service
XOK
Oaxaca, Oaxaca, Mexico Xoxocotlan
OAX
Obihiro, Japan Obihiro
OBO
Odense, Denmark Odense
ODE
Odessa, Ukraine Central
ODS
Ogdensburg, NY, USA
OGS
Ohrid, Macedonia Ohrid
OHD
Oita, Japan Oita
OIT
Okayama, Japan Okayama
OKJ
Okinawa, Ryukyu Islands, Japan Naha Field
OKA
Oklahoma City, OK, USA Will Rogers World Airport
OKC
Olympia, WA, USA
OLM
Omaha, NE, USA Eppley Airfield
OMA
Ontario, CA, USA Ontario International
ONT
Oradea, Romania Oradea
OMR
Oran, Algeria Es Senia
ORN
Orange, New South Wales, Australia Springhill
OAG
Orebro, Sweden Orebro
ORB
Orlando, FL, USA Herndon
ORL
Orlando, FL, USA Orlando International Airport
MCO
Osaka, Japan Itami International Was Osaka
ITM
Osaka, Japan Kansai International
KIX
Osaka, Japan Osaka International
OSA
Oshawa, Ontario, Canada
YOO
Oshkosh, WI, USA Wittman Field
OSH
Oslo, Norway Fornebu
FBU
Oslo, Norway Garderm O E N
GEN
Ostersund, Sweden Froesoe
OSD
Ottawa, Ontario, Canada Ottawa International
YOW
Ottumwa, IA, USA Ottumwa Industrial Airport
OTM
Ouagadougou, Burkina Faso Ouagadougou
OUA
Ouarzazate, Morocco Ouarzazate
OZZ
Oulu, Finland Oulu
OUL
Ovda, Israel
VDA
Owensboro, KY, USA
OWB
Oxnard / Ventura, CA, USA Oxnard Airport
OXR